EP1731780A1 - System d'accouplement d'un arbre de sortie d'un engrenage réducteur et d'un arbre d'entré d'un dispositif utilisateur - Google Patents
System d'accouplement d'un arbre de sortie d'un engrenage réducteur et d'un arbre d'entré d'un dispositif utilisateur Download PDFInfo
- Publication number
- EP1731780A1 EP1731780A1 EP05425417A EP05425417A EP1731780A1 EP 1731780 A1 EP1731780 A1 EP 1731780A1 EP 05425417 A EP05425417 A EP 05425417A EP 05425417 A EP05425417 A EP 05425417A EP 1731780 A1 EP1731780 A1 EP 1731780A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- output shaft
- coupling system
- shaft
- elastic bush
- reduction gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 18
- 238000010168 coupling process Methods 0.000 title claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 description 3
- 241000282693 Cercopithecidae Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
- F16D1/04—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with clamping hub; with hub and longitudinal key
- F16D1/05—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
- F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
- F16D1/093—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping
- F16D1/094—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping using one or more pairs of elastic or segmented rings with mutually mating conical surfaces, one of the mating rings being contracted and the other being expanded
Definitions
- the present invention relates to a coupling system between an output shaft of a reduction gear and an input shaft of a user device.
- coupling systems between an output shaft of a reduction gear and an input shaft of a user device which comprise an elastic bush having a conical portion.
- the conical portion is wedged between the wall of a conical seat on one end of the output shaft and the outer surface of the input shaft of the user device; and the elastic bush is fixed to the output shaft by fastening means.
- a drawback of known systems lies in the limit to which the thickness of the end wall of the output shaft can be reduced.
- minimizing the thickness of the end of the output shaft has the advantage of increasing the slope of the seat housing the conical portion of the bush and so enabling use of a wider range of user device input shaft diameters.
- Number 10 in Figure 1 indicates as a whole a reduction gear featuring a coupling system 100 in accordance with the invention.
- reduction gear 10 forms part of a motor reducer (shown only partly).
- Reduction gear 10 comprises in known manner a casing 11 through which extends an output shaft 12 having a longitudinal axis of symmetry X.
- Output shaft 12 is fitted with a ring gear 13, which meshes with a bevel pinion (not shown) forming part of a reduction stage of reduction gear 10.
- Reduction gear 10 may obviously comprise a number of reduction stages (not shown).
- shaft 12 is hollow, and comprises a cavity 14.
- Shaft 12 is supported in known manner by two ball bearings 15, 16 (Figure 1) housed inside seats in casing 11.
- ball bearing 15 has an oil seal 17 pushed onto ball bearing 15 by a cover 18 screwed to casing 11 by screws 19, 20 (only two shown in Figure 2).
- output shaft 12 of reduction gear 10 has an end 12a on which a conical seat 21 is formed for the reasons explained below.
- Conical seat 21 is designed to receive an elastic bush 22 comprising a conical main body 22a, and a flange 22b integral with conical main body 22a.
- an outer surface 23 of main body 22a rests on the wall of conical seat 21, while an input shaft 25 of a user device 26 (not shown) rests on a wall 24a of a through hole 24 in elastic bush 22.
- an outer surface 27 of end 12a has a thread 28, to which screws a threaded ring nut 29 referred to as a "reinforcing ring nut”.
- each screw 30 is screwed inside a threaded hole 31 formed in flange 22b, and inside a threaded hole 32 formed in ring nut 29.
- output shaft 12 of reduction gear 10 and input shaft 25 of user device 26 are connected mechanically as follows:
- Ring nut 29 provides in inventive manner for preventing damage to, and for greatly reinforcing, end 12a.
- a coupling system 100 between output shaft 12 of reduction gear 10 and input shaft 25 of user device 26 therefore comprises:
- Flange 22b also comprises a number of threaded holes 33 (only one shown in Figure 2) arranged circumferentially, and in each of which is screwed a respective release screw 34. More specifically, the threaded stem 34a of release screw 34 is screwed inside respective hole 33, and the head 34b of release screw 34 is located between elastic bush 22 and ring nut 29.
- the main advantage of the coupling system according to the present invention lies in reinforcing ring nut 29 enabling a big reduction in the thickness of end 12a of shaft 12.
- the slope of the wall of seat 21 may be increased considerably.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05425417A EP1731780A1 (fr) | 2005-06-09 | 2005-06-09 | System d'accouplement d'un arbre de sortie d'un engrenage réducteur et d'un arbre d'entré d'un dispositif utilisateur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05425417A EP1731780A1 (fr) | 2005-06-09 | 2005-06-09 | System d'accouplement d'un arbre de sortie d'un engrenage réducteur et d'un arbre d'entré d'un dispositif utilisateur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1731780A1 true EP1731780A1 (fr) | 2006-12-13 |
Family
ID=35149259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05425417A Withdrawn EP1731780A1 (fr) | 2005-06-09 | 2005-06-09 | System d'accouplement d'un arbre de sortie d'un engrenage réducteur et d'un arbre d'entré d'un dispositif utilisateur |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1731780A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5203221A (en) * | 1991-10-15 | 1993-04-20 | The Falk Corporation | Shaft mountable gear drive |
| US5667333A (en) * | 1995-06-30 | 1997-09-16 | Reliance Electric Industrial Company | Shaft-carried speed reducer having adaptable mounting arrangement |
| US5765961A (en) * | 1995-06-06 | 1998-06-16 | Reliance Electric Industrial Company | Adaptable mounting arrangement for shaft-carried speed reducer |
| DE29917849U1 (de) * | 1999-10-09 | 1999-12-30 | Stöber Antriebstechnik GmbH & Co, 75177 Pforzheim | Anordnung mit einer wenigstens eine Paßfedernut aufweisenden Welle |
-
2005
- 2005-06-09 EP EP05425417A patent/EP1731780A1/fr not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5203221A (en) * | 1991-10-15 | 1993-04-20 | The Falk Corporation | Shaft mountable gear drive |
| US5765961A (en) * | 1995-06-06 | 1998-06-16 | Reliance Electric Industrial Company | Adaptable mounting arrangement for shaft-carried speed reducer |
| US5667333A (en) * | 1995-06-30 | 1997-09-16 | Reliance Electric Industrial Company | Shaft-carried speed reducer having adaptable mounting arrangement |
| DE29917849U1 (de) * | 1999-10-09 | 1999-12-30 | Stöber Antriebstechnik GmbH & Co, 75177 Pforzheim | Anordnung mit einer wenigstens eine Paßfedernut aufweisenden Welle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
|
| 17P | Request for examination filed |
Effective date: 20070608 |
|
| 17Q | First examination report despatched |
Effective date: 20070704 |
|
| AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20071115 |